21122022022 has 16 divisors (see below), whose sum is σ = 31767422544. Its totient is φ = 10532916000.

The previous prime is 21122021971. The next prime is 21122022043. The reversal of 21122022022 is 22022022112.

It is a super-2 number, since 2×21122022022² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21122021987 and 21122022005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1340872 + ... + 1356532.

It is an arithmetic number, because the mean of its divisors is an integer number (1985463909).

Almost surely, 2^21122022022 is an apocalyptic number.

21122022022 is a deficient number, since it is larger than the sum of its proper divisors (10645400522).

21122022022 is a wasteful number, since it uses less digits than its factorization.

21122022022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17415.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21122022022 its reverse (22022022112), we get a palindrome (43144044134).

The spelling of 21122022022 in words is "twenty-one billion, one hundred twenty-two million, twenty-two thousand, twenty-two".